using System;
using System.Net;
using System.Net.WebSockets;
using Microsoft.AspNetCore.Builder;
using Microsoft.AspNetCore.Hosting;
using Microsoft.AspNetCore.Http;
using Microsoft.AspNetCore.Http.Features;
using Microsoft.AspNetCore.HttpsPolicy;
using Microsoft.AspNetCore.SpaServices.ReactDevelopmentServer;
using Microsoft.Extensions.Configuration;
using Microsoft.Extensions.DependencyInjection;
using Microsoft.Extensions.FileProviders;
using Microsoft.Extensions.Hosting;

namespace 综合同步
{
    public class Startup
    {
        public Startup(IConfiguration configuration)
        {
            Configuration = configuration;
        }

        public IConfiguration Configuration { get; }

        // This method gets called by the runtime. Use this method to add services to the container.
        public void ConfigureServices(IServiceCollection services)
        {
            services.AddControllersWithViews();
            // In production, the React files will be served from this directory
            services.AddSpaStaticFiles(configuration =>
            {
                configuration.RootPath = "ClientApp";
            });
        }

        // This method gets called by the runtime. Use this method to configure the HTTP request pipeline.
        public void Configure(IApplicationBuilder app, IWebHostEnvironment env)
        {
            if (env.IsDevelopment())
            {
                app.UseDeveloperExceptionPage();
            }
            else
            {
                app.UseExceptionHandler("/Error");
                // The default HSTS value is 30 days. You may want to change this for production scenarios, see https://aka.ms/aspnetcore-hsts.
                app.UseHsts();
            }

            app.UseHttpsRedirection();
            app.UseStaticFiles();
            app.UseSpaStaticFiles();
            //文件访问
            app.UseFileServer(new FileServerOptions(){
                EnableDirectoryBrowsing = true,
                RequestPath = new PathString("/StaticFiles"),
                FileProvider = new PhysicalFileProvider(LocalServer.GetConfigValue<string>("DataPath")),
            });
            
            app.UseRouting();
            app.UseWebSockets(new WebSocketOptions() {KeepAliveInterval=TimeSpan.FromSeconds(1)});
            app.Use(async (context, next) =>{
                try{
                    if (context.Request.Path == "/ws1" || context.Request.Path == "/ws2"){
                        if (context.WebSockets.IsWebSocketRequest){
                            using (WebSocket webSocket = await context.WebSockets.AcceptWebSocketAsync()){
                                await WsData.BroadCastData(webSocket,context.Request.Path == "/ws1"?1:2);
                            }
                        }
                        else{
                            context.Response.StatusCode = (int)HttpStatusCode.BadRequest;
                        }
                    }
                    else{
                        await next();
                    }
                }catch(Exception){}
            });

            app.UseEndpoints(endpoints =>
            {
                endpoints.MapControllerRoute(
                    name: "default",
                    pattern: "{controller}/{action=Index}/{id?}");
            });

            app.UseSpa(spa =>
            {
                spa.Options.SourcePath = "ClientApp";
                if (env.IsDevelopment())
                {
                    spa.UseReactDevelopmentServer(npmScript: "start");
                }
            });
        }
    }
}
